Polishing machine



INVENTOR @295e E ATTO R N EY April 23, 1929.

mA F. FRlsToE l POLISHING MACHINE Filed Sept. 14, 1926 Patented Apr. 23,1929.

UNITED STATES PATENT GFFICE.

POLISHING MACHINE.

Application Ied September 14, 1926. Serial No. 135,412.

This invention comprehends the provision of a polishing machine, whichis simple in construction and 'convenient to handle and manipulate,being primarily intended for polishing nickellat-ed railiators andbii1i1p ers of an autoinolbile, the invention residing in theconstruction, combination and arrange nient of' parts as claimed.

In the drawing forming part of this application like liumerals ofreference indicate similar parts in the several views and wherein:

Figure 1 is a view in elevation.

Figure Q is a sectional View on line 2m? of Figure 1. 4

Figure 3 is a fragmentary sectional view showing one of the polishingtools associated with its respective shaft.

Figure el is a longitudinal sectional -view through the polishingr tool.

Referring to the drawing in detail 1l) in dicates an electric motor, thecasing of which is equipped with a handle 11 by means of which themachine or device can .be convenient-lv handled for the purposeintended. The motor includes a shaft 12 which is provided with gears 13adjacent the ends thereof, and these gears mesh with similar gears 1+icarried bv shafts 15 arranged at either side of the inoton shaft 12. Theshafts 15 are journaled and housed in a suitable casing 16 arranged atone end of the motor casing, and may if desired be welded to the latter.The casing 1G may be formed in two sections and one of the sectionsincludes four parallel transversely extendingeleinents such as 8provided with hearings 9 shown as projecting elements in Figure 1,assumed to be apertured for the journals of the shafts (said projectingele iuents constituting bearings being illustrated in section). Theswitch for the motor is arranged within a handle 11 and indicated at 17.It will be noted upon inspection of Figure 3 that each shaft 15 isprovided with an extension 18 which terminates to provide a sleeve-li keportion 1.9 threaded onto the adjacent end of the main section 15. Thesections 18 can vai-y in length and be quickly attached the section 18of the shaft, with which it is held associated by a slot and pinconnection. The pin 22 projects from the section 18 of the shaft, whilethe bore of the tool is rovided with a bayonet slot 23 to accornmo atethe pin. It will be further noted that the section 18 of either shaftcan be detached from the niain section thereof, so that only onepolishing tool may be used at a time, or more than one tool used at thesame time if desired.

Vhile it is believed that from the foregoing description, the nature andadvantages of the invention will be readily apparent, Il desire to haveit understood, that I do not limit inysel'i to what is herein shown anddescribed and that such changes maybe resort-ed to when de sii'ed asfall Within the scope of what is claimed.

What is claimed is: y

A machine of the character described comprising an electric motorincluding a shaft, driven shafts arranged at either side of the motorshaft and geared thereto, a frame including transverse elements in twoparallel series, providing bearings for the shafts, and

the gearing including two series of gear wheels positioned in operativerelation bythe transverse elements of the frame, each driven shaftincluding an extension removably associated therewith, a polishing toolfor each driven shaft, and having a longitudinal bore for the receptionof said extension, a slot and pin connection between the tool and saidextension, whereby the tool can be detached therefrom, and a handle forthe machine.

In testimony whereof I ax my signature.

DEWEY FRANKLIN FRISTOE.

